“Kajian Termodinamika Adsorpsi Hibrida Merkapto-Silika Dari Abu Sekam Padi Terhadap Ion Co(II)”. Jurnal Kimia Valensi 3, no. 2 (November 6, 2013). Accessed October 27, 2025. https://journal.uinjkt.ac.id/valensi/article/view/500.